University of Delhi 2010-2nd Year B.Sc PMCS (Physics, Mathematics, Computer Science) Prog BIODIVERSITY II ANIMALS UNIVERSITY - Question Paper
This question paper contains 4 printed pages ]
YourRoliNo. .. .
B.Sc. Prog, /II J L.S.-202 - BIODIVERSIT Y-II (ANIMALS) (NC - Admission of 2008 onwards)
Time : 3 Hours Maximum Marks : 75
(Write your Roll No on the top immediately on receipt of this question paper )
There are two Sections, Section A and Section B to be answered on separate answer-books
Draw labelled diagrams wherever necessary
Answer three questions m all, including Q No 1 which is
compulsory
1. (a) Define the following :
(i) Baieen
(h) Camassial tooth
(m) Interbranchial septum
(iv) Amnion 4
(b) Differentiate between the following .
0) Holobranch & Hemibranch
(II) Homodout & Heterodont
(III) Swim bladder & air sac 6
(c) Classify the following
(i) Amphioxus
(ii) Hemidactylus (ui) Electric ray
(iv) Bufo 4
2. What do you understand by Osmoregulation ? Give an account of osmoregulatory mechanisms adapted by fishes in varying salinity 12
3 Explain respiration in amphibians Add a note on the respiratory adaptations to amphibians mode
of life. 12
4 Wnte short notes on any two of the following (l) Integument m Mammals
(n) Flight adaptations in birds
(in) Salient features & affinities m
Hemichordates 6 + 6
SECTION-B (Nonchorda)
Answer three questions in all, including Question No. 1 which is compulsory
1 (a) Differentiate between: 6
(1) Protonephndia and metanephndia.
(ii) Nematocyst and Tnchocyst (in) Radiata and Bilatena
(b) Define the following 3 (i) Cephahzation
(n) Deuterostome (in) Schizocoelom
(c) Give the function of the following 4
(i) Ospharadium
(ii) Anstotles lantern (m) Ommatadmm
(iv) Acetabulum
2. (a) Give an account of polymorphism in
Hydrozoa 9
(b) Diagramatically show the structure of flagella 3
3. Give an account of various types of larvae echinoderms and their significance
4. Attempt any two of the following:
in
6 + 6
(i) Metamerism ,
(ii) Conjugation in Paramecium
(m) Parasitic adaptations in platyhelminthes.
5179 4 2,000
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